mirror of
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400 lines
10 KiB
C++
400 lines
10 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is mozilla.org code.
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*
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* The Initial Developer of the Original Code is
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* Netscape Communications Corporation.
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* Portions created by the Initial Developer are Copyright (C) 1998
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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* Pierre Phaneuf <pp@ludusdesign.com>
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either of the GNU General Public License Version 2 or later (the "GPL"),
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* or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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#include "nsISupports.h"
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#include "nsIComponentManager.h"
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#include "nsICharsetDetector.h"
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#include "nsICharsetDetectionObserver.h"
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#include "nsComponentManagerUtils.h"
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#include "nsServiceManagerUtils.h"
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#include <stdio.h>
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#include <stdlib.h>
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#if defined(XP_WIN) || defined(XP_OS2)
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#include <io.h>
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#endif
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#ifdef XP_UNIX
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#include <unistd.h>
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#endif
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class nsStatis {
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public:
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nsStatis() { };
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virtual ~nsStatis() { };
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virtual PRBool HandleData(const char* aBuf, PRUint32 aLen) = 0;
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virtual void DataEnd() = 0;
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virtual void Report()=0;
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};
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class nsBaseStatis : public nsStatis {
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public:
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nsBaseStatis(unsigned char aL, unsigned char aH, float aR) ;
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virtual ~nsBaseStatis() {};
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virtual PRBool HandleData(const char* aBuf, PRUint32 aLen);
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virtual void DataEnd() ;
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virtual void Report();
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protected:
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unsigned char mLWordHi;
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unsigned char mLWordLo;
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private:
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PRUint32 mNumOf2Bytes;
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PRUint32 mNumOfLChar;
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PRUint32 mNumOfLWord;
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PRUint32 mLWordLength;
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PRUint32 mLWordLen[10];
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float mR;
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PRBool mTailByte;
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PRBool mLastLChar;
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};
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nsBaseStatis::nsBaseStatis(unsigned char aL, unsigned char aH, float aR)
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{
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mNumOf2Bytes = mNumOfLWord = mLWordLength = mNumOfLChar= 0;
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mTailByte = mLastLChar = PR_FALSE;
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for(PRUint32 i =0;i < 20; i++)
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mLWordLen[i] = 0;
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mLWordHi = aH;
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mLWordLo = aL;
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mR = aR;
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}
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PRBool nsBaseStatis::HandleData(const char* aBuf, PRUint32 aLen)
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{
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for(PRUint32 i=0; i < aLen; i++)
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{
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if(mTailByte)
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mTailByte = PR_FALSE;
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else
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{
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mTailByte = (0x80 == ( aBuf[i] & 0x80));
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if(mTailByte)
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{
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mNumOf2Bytes++;
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unsigned char a = (unsigned char) aBuf[i];
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PRBool thisLChar = (( mLWordLo <= a) && (a <= mLWordHi));
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if(thisLChar)
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{
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mNumOfLChar++;
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mLWordLength++;
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} else {
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if(mLastLChar) {
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mNumOfLWord++;
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mLWordLen[ (mLWordLength > 10) ? 9 : (mLWordLength-1)]++;
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mLWordLength =0 ;
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}
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}
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mLastLChar = thisLChar;
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} else {
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if(mLastLChar) {
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mNumOfLWord++;
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mLWordLen[ (mLWordLength > 10) ? 9 : (mLWordLength-1)]++;
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mLWordLength =0 ;
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mLastLChar = PR_FALSE;
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}
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}
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}
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}
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return PR_TRUE;
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}
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void nsBaseStatis::DataEnd()
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{
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if(mLastLChar) {
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mNumOfLWord++;
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mLWordLen[ (mLWordLength > 10) ? 9 : (mLWordLength-1)]++;
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}
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}
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void nsBaseStatis::Report()
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{
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if(mNumOf2Bytes > 0)
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{
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/*
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printf("LChar Ratio = %d : %d ( %5.3f)\n",
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mNumOfLChar,
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mNumOf2Bytes,
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((float)mNumOfLChar / (float)mNumOf2Bytes) * 100);
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*/
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float rate = (float) mNumOfLChar / (float) mNumOf2Bytes;
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float delta = (rate - mR) / mR;
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delta *= delta * 1000;
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#ifdef EXPERIMENT
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printf("Exp = %f \n",delta);
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#endif
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}
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/*
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if(mNumOfLChar > 0)
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printf("LWord Word = %d : %d (%5.3f)\n",
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mNumOfLWord,
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mNumOfLChar,
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((float)mNumOfLWord / (float)mNumOfLChar) * 100);
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if(mNumOfLWord > 0)
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{
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PRUint32 ac =0;
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for(PRUint32 i=0;i<10;i++)
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{
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ac += mLWordLen[i];
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printf("LWord Word Length[%d]= %d -> %5.3f%% %5.3f%%\n", i+1,
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mLWordLen[i],
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(((float)mLWordLen[i] / (float)mNumOfLWord) * 100),
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(((float)ac / (float)mNumOfLWord) * 100));
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}
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}
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*/
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}
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class nsSimpleStatis : public nsStatis {
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public:
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nsSimpleStatis(unsigned char aL, unsigned char aH, float aR,const char* aCharset) ;
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virtual ~nsSimpleStatis() {};
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virtual PRBool HandleData(const char* aBuf, PRUint32 aLen);
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virtual void DataEnd() ;
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virtual void Report();
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protected:
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unsigned char mLWordHi;
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unsigned char mLWordLo;
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private:
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PRUint32 mNumOf2Bytes;
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PRUint32 mNumOfLChar;
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float mR;
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const char* mCharset;
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PRBool mTailByte;
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};
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nsSimpleStatis::nsSimpleStatis(unsigned char aL, unsigned char aH, float aR, const char* aCharset)
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{
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mNumOf2Bytes = mNumOfLChar= 0;
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mTailByte = PR_FALSE;
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mLWordHi = aH;
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mLWordLo = aL;
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mR = aR;
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mCharset = aCharset;
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}
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PRBool nsSimpleStatis::HandleData(const char* aBuf, PRUint32 aLen)
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{
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for(PRUint32 i=0; i < aLen; i++)
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{
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if(mTailByte)
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mTailByte = PR_FALSE;
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else
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{
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mTailByte = (0x80 == ( aBuf[i] & 0x80));
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if(mTailByte)
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{
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mNumOf2Bytes++;
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unsigned char a = (unsigned char) aBuf[i];
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PRBool thisLChar = (( mLWordLo <= a) && (a <= mLWordHi));
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if(thisLChar)
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mNumOfLChar++;
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}
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}
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}
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return PR_TRUE;
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}
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void nsSimpleStatis::DataEnd()
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{
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}
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void nsSimpleStatis::Report()
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{
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if(mNumOf2Bytes > 0)
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{
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float rate = (float) mNumOfLChar / (float) mNumOf2Bytes;
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float delta = (rate - mR) / mR;
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delta = delta * delta * (float)100;
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#ifdef EXPERIMENT
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printf("Exp = %f \n",delta);
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if(delta < 1.0)
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printf("This is %s\n" ,mCharset);
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#endif
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}
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}
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//==========================================================
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#define MAXBSIZE (1L << 13)
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void usage() {
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printf("Usage: DetectFile detector blocksize\n"
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" detector: "
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"ja_parallel_state_machine,"
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"ko_parallel_state_machine,"
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"zhcn_parallel_state_machine,"
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"zhtw_parallel_state_machine,"
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"zh_parallel_state_machine,"
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"cjk_parallel_state_machine,"
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"ruprob,"
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"ukprob,"
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"\n blocksize: 1 ~ %ld\n"
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" Data are passed in from STDIN\n"
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, MAXBSIZE);
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}
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class nsReporter : public nsICharsetDetectionObserver
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{
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NS_DECL_ISUPPORTS
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public:
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nsReporter() { };
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virtual ~nsReporter() { };
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NS_IMETHOD Notify(const char* aCharset, nsDetectionConfident aConf)
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{
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printf("RESULT CHARSET : %s\n", aCharset);
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printf("RESULT Confident : %d\n", aConf);
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return NS_OK;
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};
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};
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NS_IMPL_ISUPPORTS1(nsReporter, nsICharsetDetectionObserver)
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nsresult GetDetector(const char* key, nsICharsetDetector** det)
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{
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char buf[128];
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strcpy(buf, NS_CHARSET_DETECTOR_CONTRACTID_BASE);
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strcat(buf, key);
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return CallCreateInstance(buf, det);
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}
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nsresult GetObserver(nsICharsetDetectionObserver** aRes)
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{
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*aRes = nsnull;
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nsReporter* rep = new nsReporter();
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if(rep) {
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return rep->QueryInterface(NS_GET_IID(nsICharsetDetectionObserver) ,
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(void**)aRes);
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}
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return NS_ERROR_OUT_OF_MEMORY;
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}
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int main(int argc, char** argv) {
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char buf[MAXBSIZE];
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PRUint32 bs;
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if( 3 != argc )
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{
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usage();
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printf("Need 2 arguments\n");
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return(-1);
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}
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bs = atoi(argv[2]);
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if((bs <1)||(bs>MAXBSIZE))
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{
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usage();
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printf("blocksize out of range - %s\n", argv[2]);
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return(-1);
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}
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nsresult rev = NS_OK;
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nsICharsetDetector *det = nsnull;
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rev = GetDetector(argv[1], &det);
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if(NS_FAILED(rev) || (nsnull == det) ){
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usage();
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printf("Invalid Detector - %s\n", argv[1]);
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printf("XPCOM ERROR CODE = %x\n", rev);
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return(-1);
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}
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nsICharsetDetectionObserver *obs = nsnull;
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rev = GetObserver(&obs);
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if(NS_SUCCEEDED(rev)) {
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rev = det->Init(obs);
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NS_IF_RELEASE(obs);
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if(NS_FAILED(rev))
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{
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printf("XPCOM ERROR CODE = %x\n", rev);
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return(-1);
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}
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} else {
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printf("XPCOM ERROR CODE = %x\n", rev);
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return(-1);
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}
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size_t sz;
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PRBool done = PR_FALSE;
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nsSimpleStatis ks(0xb0,0xc8, (float)0.95952, "EUC-KR");
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nsSimpleStatis js(0xa4,0xa5, (float)0.45006, "EUC-JP");
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nsStatis* stat[2] = {&ks, &js};
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PRUint32 i;
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do
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{
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sz = read(0, buf, bs);
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if(sz > 0) {
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if(! done) {
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#ifdef DEBUG_DetectCharset
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printf("call DoIt %d\n",sz);
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#endif
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rev = det->DoIt( buf, sz, &done);
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#ifdef DEBUG_DetectCharset
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printf("DoIt return Done = %d\n",done);
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#endif
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if(NS_FAILED(rev))
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{
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printf("XPCOM ERROR CODE = %x\n", rev);
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return(-1);
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}
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}
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for(i=0;i<2;i++)
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stat[i]->HandleData(buf, sz);
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}
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// } while((sz > 0) && (!done) );
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} while(sz > 0);
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if(!done)
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{
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#ifdef DEBUG_DetectCharset
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printf("Done = %d\n",done);
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printf("call Done %d\n",sz);
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#endif
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rev = det->Done();
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if(NS_FAILED(rev))
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{
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printf("XPCOM ERROR CODE = %x\n", rev);
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return(-1);
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}
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}
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for(i=0;i<2;i++) {
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stat[i]->DataEnd();
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stat[i]->Report();
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}
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#ifdef DEBUG_DetectCharset
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printf( "Done\n");
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#endif
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NS_IF_RELEASE(det);
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#ifdef DEBUG_DetectCharset
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printf( "Done 2\n");
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#endif
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return (0);
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}
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